Orland Park, IL has a population of 58,612 and is the 675th largest city in the United States. The population density is 2,664 per sq mi which is 1098% higher than the Illinois average and 2841% higher than the national average. The median age in Orland Park is 46 which is approximately 22% higher than the Illinois average of 37. In Orland Park, 66% of the population over 15 years of age are married, 77% speak English and 4% speak Spanish. 75% of Orland Park residents were born in Illinois, 10% were born out of state, 1% were born outside of the United States and 14% were foreign born.